Thymolphthalein ACS, Reag. Ph. Eur. Indikator

Lieferant: Merck

Synonyms: 3,3-Bis(4-hydroxy-5-isopropyl-o-tolyl)phthalid2-(1-Hydroxy-1,1-di(4-hydroxy-2-methyl-5-(methylethyl)phenyl)methyl)benzoesäurelacton

M-Clarity™ Qualitätsstufe = MQ200

1.08175.0025EA 267 CHF
1.08175.0025 1.08175.0100 1.08175.0005
Thymolphthalein ACS, Reag. Ph. Eur. Indikator
Thymolphthalein
Formel: C₂₈H₃₀O₄
MW: 430,54 g/mol
Melting Pt: 253 °C
Lager Temperatur: Raumtemperatur
MDL Number: MFCD00005909
CAS-Nummer: 125-20-2
EINECS: 204-729-7
Merck Index: 12,09542

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Spezifikation Testergebnisse

Appearance White to almost white powder, eventually slightly yellowish.
Identity (UV/VIS-Spectrum) passes test
Absorption maximum λmax. (buffer pH 10.5) 592 - 596 nm
Spec. Absorptivity A 1%/1cm (λmax; 0.01 g/l; buffer pH 10.5; calculated on anhydrous substance) 800 - 900
Transition range (according to ACS) passes test
Transition range pH 9.0 - pH 10.5 colourless - blue
Loss on drying (110 °C) ≤ 1 %

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